Development of Experimental System for maneuverability of High-Speed Craft Using an Unmanned Towing Carriage

无人拖车高速船操纵性实验系统研制

• 批准号: 10355037
• 负责人: IKEDA Yoshiho
• 金额: $ 9.6万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10355037/
• 关键词: Planing Craft; High-Speed; Maneuverability; Slalom; Oblique Towing; Instability; Porpoising; Corkscrew; 操縦性; 流体力; 実験; 高速無人電車; 操縦性能; PMM

Very limited numbers of studies on maneuverability of hard-chine planing hulls have been carried out, and any theoretical or experimental procedures to simulate the maneuvering characteristics of them have not been established yet. Although the most important characteristic that is different from that of a conventional displacement vessel seems to be the significant effects of changing of running attitude on maneuvering, measured hydrodynamic forces to use in a motion equations for maneuverability of six-degree-of-freedom for them are almost nonexistent as far as the authors know.In the first year, in order to clarify the effects, a six components of hydrodynamic forces acting on the scale model of a planing craft in oblique towing condition are measured using a high-speed carriage, maximum speed of which is 15m/s, in the towing tank of Osaka Prefecture University. The model is fully captured by a six-component load cell, and its attitudes, trim, rise and heel angle, are systematically … More changed. The experimental results show that the hydrodynamic forces are proportional to the square of advanced speed at planing speed, and demonstrate that the effects of attitude on the hydrodynamic forces are significant. The dependency of each hydrodynamic component on the running attitude is identified on the basis of the experimental results.In the second year, six-component hydrodynamic forces acting on the 1/4 scale model of a planing craft by planar motion mechanism test at high forward speed are measured for various planar motions and running attitudes, rise and trim angle. The measured data show that the first order components with the same frequency as that of forced motion are significantly larger than high order components. This means that the hydrodynamic forces model can be expressed by only the first order components of motion's velocity and acceleration. The effect of running attitudes on the hydrodynamic coefficients is significant and it is necessary for maneuverability of planing craft to take into account this effect.In the final year, a model test method, a partly captured PMM test, to measure unstable motions of a planing crafl induced by periodic maneuvering motion is developed. The experimental results of a planing craft at Fn=2.0 by the method demonstrates that a violent motion which is large rolling, heaving and pitching coupling motion occurs when the frequency of motion given by PMM coincides with the rolling natural frequency, and with the half of the heaving and pitching natural frequency of the craft. It should be noted that the rolling motion has the same frequency as the forced motion given by PMM, but that the heaving and pitching motions have the twice of the frequency of the forced motion. In order to clarify the cause of the violent motion, the hydrodynamic forces acting on the hull in periodic maneuvering motions are measured by PMM tests for a captured model and obliquely towing tests. The experimental results show that the rolling displacement of the craft generates hydrodynamic heaving force and pitching moment at high speed. A non-linear time-domain simulation of the motions using the measured hydrodynamic forces is carried out. The simulated motions are in fairly good agreement with the experimental ones. Less

对硬脊滑行艇操纵性的研究非常有限，至今还没有建立任何理论或实验方法来模拟硬脊滑行艇的操纵特性。虽然与常规排水型船不同的最重要的特点似乎是航行姿态的变化对操纵性的显著影响，但据作者所知，用于六自由度操纵性运动方程的实测水动力几乎是不存在的。在大坂府立大学的拖曳水池中，用最大速度为15 m/s的高速滑架测量了滑行艇缩尺模型在斜拖状态下的六个水动力分量。该模型是完全捕获的六分力传感器，其姿态，纵倾，上升和横倾角，是系统的， ...更多信息 变了实验结果表明，在滑行速度下，水动力与前进速度的平方成正比，姿态对水动力的影响是显著的。在第二年，利用滑行艇平面运动机构试验，对滑行艇1/4比例模型在不同的平面运动、航行姿态、升角和纵倾角下的六分量水动力进行了测量。实测数据表明，与强迫运动频率相同的一阶分量明显大于高阶分量。这意味着水动力模型可以仅由运动的速度和加速度的一阶分量表示。滑行艇的航行姿态对水动力系数的影响是显著的，考虑这种影响对滑行艇的操纵性是必要的，本文最后一年发展了一种模型试验方法，即部分捕获的PMM试验，以测量周期性操纵运动引起的滑行艇的不稳定运动。用该方法对Fn=2.0的滑行艇进行了实验研究，结果表明，当PMM给出的运动频率与滑行艇的横摇固有频率相一致，且与升沉和纵摇固有频率的一半相一致时，滑行艇会发生剧烈的横摇、升沉和纵摇耦合运动。应该注意的是，横摇运动的频率与PMM给出的受迫运动的频率相同，但垂荡和俯仰运动的频率是受迫运动频率的两倍。为了弄清剧烈运动的原因，通过捕获模型的PMM试验和斜拖试验测量了周期操纵运动中船体所受的水动力。实验结果表明，高速航行时，船舶的横摇位移产生水动力垂荡力和俯仰力矩。使用测得的水动力的运动的非线性时域模拟进行。模拟的运动与实验结果相当吻合。少

项目成果

Y.Ikeda and T.Katayama: "Roll Damping Prediction Method for a High-Speed Planing Craft"Proc. of the 7th International Conf. on Stability of Ship and Ocean Vehicles. Vol.B. 532-541 (2000)

Y.Ikeda 和 T.Katayama：“高速滑行艇的横摇阻尼预测方法”Proc。

田嶋慎一郎,池田良穂,片山徹,奥村英晃: "PMM試験による滑走艇の操縦流体力の計測"関西造船協会誌. 232. 71-76 (1999)

Shinichiro Tajima、Yoshiho Ikeda、Toru Katayama、Hideaki Okumura：“通过 PMM 测试测量滑行艇的操纵流体力”关西造船协会杂志 232. 71-76 (1999)。

Y.Ikeda and T.Katayama: "Roll Damping Prediction Method for a High-Speed Planing Craft"Proc.of the 7th International Conf.on Stability of Ship and Ocean Vehicles. B. 532-541 (2000)

Y.Ikeda 和 T.Katayama：“高速滑行艇的横摇阻尼预测方法”，第七届国际船舶和海洋车辆稳定性会议论文集。

T.Katayama, Y.Ikeda and H.Okumura: "A Study on Unstable Motions of a Planing Craft in Maneuvering-Large Amplitude Motion due to Periodic Maneuvering Motion-"Journal of the Society of Naval Architects of Japan. Vol.188. 155-162 (2000)

T.Katayama、Y.Ikeda 和 H.Okumura：“机动中滑行艇不稳定运动的研究——由于周期性机动运动引起的大振幅运动”——日本造船学会会刊。

S.Tajima, Y.Ikeda, T.Katayama and H.Okumura: "Measurements of Hydrodynamic Forces Acting on Planing Hull at High-Speed by Planar Motion Mechanism Test"Journal of the Kansai Society of Naval Architects, Japan. No.232. 71-76 (1999)

S.Tajima、Y.Ikeda、T.Katayama 和 H.Okumura：“通过平面运动机构测试测量高速滑行船体的水动力”日本关西造船学会杂志。